Trolley-guard.



harps of the usual constructions.

CHARLES H. YARRIXGTON, OI*l WTERBURY, CON-NBLTICT.

Specication of Letters Patent.

TROLLE Y-GUARD.

' Patent-ed Aug. '4, 11908.

Application le December 17, 1907. Serial o. 406,887.

To all whom i t may concern:

' Beit. known that l, .CHARLES H. Yxnmxe- TON, a citizen .of the United States. residingl at Taterbury, in thc county of New Haven and State of Connecticut, have invented a. new and useful Trolley-Guard, of which the following is a specification.

This invention relates to trolley guards, and is designed as an attachment foi-trolley The object of the invention is to provide a guard made up of separately movable interchangeable members which can be readily attached to the trolley harp, and which, when so positioned, will operate to prevent the trolley wheel from leaving the m're.

Another' object is to provide guanl ineinbers designed to be shifted oi deflected by the guys sup iorting the trolley wire, said guard devices eing separately movable in this manner as when, for example, the trolley wheel is passing from one wire to another, as at switches.

vWith these and other objects in view, as will appeal' as the nature of' the invention is better understood, the same consists in the improved construction and novel combination and arrangement of parts, which will be hereinafter more fully described and particularly pointed out in thc appended ciaims.

In the drawings l" igure 1 is a side eleva'- tion of a trolley harp having the present improvements applied thereto, one of Elie positions of the guard fingers being indicated by dotted lines. Fig. 2 is a plan vievv of the parts shown in Fig. 1, the guard fingers being shown partly depressed.

Referring t0 the figures by characters of reference, A designates a trolley pcie having a harp B at one end and which maj, be of the usual construction, there being wheel C journaled within the harp and upon a removable axle c designedto be held in place in any preferred manner, as b v means of Cotter pins c.

The foregoing parts do not constitute any part of the present invention, but are of the usual construction. The guards for use in connect-ion with the trolley harp c: Vist of oppositely disposed independently movable members each comprising a disl: 1 having a central orifice 2 for the reception of one end )ortion of the axle C. The guard arm is iormed upon the perinnery of the disk, as shown at 3, and

art v laps the peripheral portion ofwhcel This arm alsoextends trolley i across one of the wings of the harp B and terminates iii-an outstanding finger 4. The parts are so proportioned when they are mounted upon the harp that the fingers 4 are spaced apart laterally a suiiicient distance to permit the trolley wire D to be inserted therebetween. That portion of each arm 3 overhai'iging the groove in wheel C is beveled, as shown at 5, the two beveled faces of arms3 converging toward the fingers 4.

Detachably secured to the. pole A are clamping plates 6, each of which has laterally extending wings 7 engaiged bybolts 8, or other suitable means, for binding the plates upon the pole. Trunnions 9 extend from the middle )ortions of these pla-tes, and suitably fastened to each trunnion is one end of a coiled spring 10, the other end of which engages a stud 11 outstanding from the outer face of one of the disks 1. The )arts are so proportioned that when heid in tlieir normal positions by the springs, ne guard fingers 4 extend practically verticaiiy, as indicated in Fig. 1, 'soI as to lap opposite portions of the wire B.

of the guard is a duplicate of the other meinber, and these members may be made of standard sizes so as to be readily applied to harps of different sizes and constructions. When it is desired to appiy the guards to a trolley harp, the fastening devices c' are removed and one disk 1 is placed upon each end )ortion of axle c, so that the arms 3 will overliang the grooved wheel C- The plates 6 are then fastened to pole A at a sufficient distance from the harp to cause springs 10 to be normally under the proper tension. After the fastening devices c have been replaced, the device is in condition for use.

To place the wheel C u en the wire D, the same is raised in the usua manner, and if the wire does not pass between the fingers 4, it will strike one of them and deflect it, until the wire becomes seated Within the groove in wheel C, whereupon the depressed finger will be returned to its normal or raised position by its spring 10. Shotiid the fingers be brought into contact with s guy such as ordinarily used for supporting trolley wires, they will be. promptly swung dmvnwardl y thereby, without injury' thereto, :vid the springs, which are placed under stress by this operation, will )romptly return the fingers to their no1-maf positions after the guy has been' passed. As shown particularly in Fig. 2 the lt is to be understood that each member two ingers -1 arenormally spaced apart a i distance considerably-lessthan the width of the groove in wheel C and therefore the danger of the `wheel leaving the trolley Wireis great-ly reduced because of the fact that these guards overhang the wheel and the distance between the` lingers is but slightly greater than the diameter of t-he wire. By providing the beve-led faces, the wire D is guided between the fingers 4, when the trolley is lowered, so that the removal of the trolley from the wire is in no wise hindered. It will be noted thatthe fingers will operate in the same manner whether the trolley be moved forward or backward upon the Wire, because the springs tend to operate in the same manner m View of their peculiar disposition.

I claimz- The combination wit-h a trolley harp and a grooved wheel journaled therein; of an attachment "-zeompr1sing members ivotally mounted upon\t \h'e outer fac'es of tie harp,

guard arms extending inwardly from said members and overhanging the harp and wheel, those portions of the armsoverhang-y ing the groove in the wheel being beveled and converging outwardly, guard lingers extendf err-mms H. 'i'.anRINGToN.

' lVitnesses: i f" Jam-:s B. BoLAN, n

WILL I. BUNNELL;

elow the harp, and 

